package com.zc.api.controller;

public class Test {

    public static void main(String[] args) {
        String originalString = "68400C08001320240425181250440309000200020201440309000200020202020176000000000000000000000000000000000000000000000000000000000000000076C4";
        String spacedString = addSpaces(originalString);
        System.out.println(spacedString);
    }

    public static String addSpaces(String input) {
        StringBuilder result = new StringBuilder();
        for (int i = 0; i < input.length(); i++) {
            result.append(input.charAt(i));
            if ((i + 1) % 2 == 0 && i < input.length() - 1) {
                result.append(" ");
            }
        }
        return result.toString();
    }
}
